Detachment puller

Abstract

A detachment puller is provided, including a main body, having a threaded hole and a plurality of pivoting portions circumferentially disposed around the threaded hole; a screw rod, screwed with the threaded hole; a plurality of jaws, respectively pivoted to the plurality of pivoting portions, each of the plurality of jaws including an abutted portion; an adjustment mechanism, elastically and movably disposed on the main body, the adjustment mechanism including a plurality of engaging portions, each of the plurality of engaging portions including a first abutting portion and a second abutting portion, the abutted portion being located between the first and second abutting portions, the first abutting portion being movable toward a first direction to press the abutted portion, the second abutting portion being movable toward a second direction to press the abutted portion, the first and second directions being opposite to each other.

What is claimed is: 
     
       1. A detachment puller, including:
 a main body, having a threaded hole and a plurality of pivoting portions circumferentially disposed around the threaded hole; 
 a screw rod, screwed with the threaded hole; 
 a plurality of jaws, respectively pivoted to the plurality of pivoting portions, each of the plurality of jaws including an abutted portion and a second abutted portion, the abutted portion and the second abutted portion being diametrically opposite to each other relative to a pivot point of the jaw; 
 an adjustment mechanism, elastically and movably disposed on the main body, the adjustment mechanism including a plurality of engaging portions, each of the plurality of engaging portions including a first abutting portion and a second abutting portion, either of the abutted portion and the second abutted portion being optional to be located between the first and second abutting portions; wherein when the abutted portion is located between the first and second abutting portions, the first abutting portion is movable toward a first direction to press the abutted portion, the second abutting portion is movable toward a second direction to press the abutted portion, and the first and second directions being opposite to each other; 
 wherein when the second abutted portion is located between the first and second abutting portions, the first abutting portion is movable toward the first direction to press the second abutted portion, and the second abutting portion is movable toward the second direction to press the second abutted portion; 
 wherein each of the plurality of engaging portions further includes an engaging groove disposed between the first and second abutting portions, the abutted portion is engaged within the engaging groove, and when being on a first position, each of the plurality of jaws abuts only against the engaging groove without abutting against the first and second abutting portions. 
 
     
     
       2. The detachment puller of  claim 1 , wherein the abutted portion further includes a first abutted slant face and a second abutted slant face, the first and second abutted slant faces are located on two opposite sides of the abutted portion, the first abutting portion is abuttable against the first abutted slant face, and the second abutting portion is abuttable against the second abutted slant face. 
     
     
       3. The detachment puller of  claim 2 , wherein the abutted portion further includes a convex face which is located between the first and second abutted slant faces, when each of the plurality of jaws is on the first position, only the convex face abuts against the engaging groove, and when each of the plurality of jaws is on a second position, one of the first and second abutting portions abuts against the convex face and each of the plurality of jaws swings between the first and second positions. 
     
     
       4. The detachment puller of  claim 1 , wherein the adjustment mechanism further includes a base, the plurality of engaging portions are disposed on the base, and each of the plurality of engaging portions protrudes laterally outward from the base. 
     
     
       5. The detachment puller of  claim 4 , wherein each of plurality of engaging portions is detachably disposed on the base. 
     
     
       6. The detachment puller of  claim 1 , further including a tube and a positioning ring, the tube being connected to the main body, the tube and the threaded hole being coaxially arranged, the adjustment mechanism including a base, the base being sleeved to the tube via a through hole of the base, the positioning ring being movably and positionably sleeved to the tube, the base being located between the main body and the positioning ring, the positioning ring being abuttable against the base. 
     
     
       7. The detachment puller of  claim 1 , further including a plurality of pins, wherein each of the plurality of pivoting portion has a first pivotal hole, each of the plurality of jaws has a second pivotal hole which corresponds to one of the first pivotal hole, each of the plurality of pins is detachably disposed through one of the first pivotal hole and one of the second pivotal hole, an exterior circumference of each of the plurality of pins includes a ring member which is radially deformable and blockable by a hole flange of one of the first pivotal hole. 
     
     
       8. The detachment puller of  claim 1 , further including a cylinder holder, the main body further including a through hole, the cylinder holder being detachably disposed within the through hole, the cylinder holder including the threaded hole. 
     
     
       9. The detachment puller of  claim 2 , wherein the abutted portion is cone-shaped; the engaging groove is a chamfered groove; each of the plurality of engaging portions protrudes toward the first direction, each of the plurality of pivoting portions has a recess, the plurality of jaws are pivoted to the recess, each of the plurality of engaging portions is inserted into the recess, and a side of each of the plurality of engaging portions abuts against a bottom of the recess; the adjustment mechanism further includes a base, the plurality of engaging portions are disposed on the base, and each of the plurality of engaging portions protrudes laterally outward from the base; each of plurality of engaging portions is detachably disposed on the base; the detachment puller further includes a tube and a positioning ring, the tube is connected to the main body, the tube and the threaded hole are coaxially arranged, the base is sleeved to the tube via a through hole of the base, the positioning ring is movably and positionably sleeved to the tube, the base is located between the main body and the positioning ring, and the positioning ring is abuttable against the base; the positioning ring is screwable relative to the tube; the detachment puller has a plurality of pins, each of the plurality of pivoting portion has a first pivotal hole, each of the plurality of jaws has a second pivotal hole which corresponds to one of the first pivotal hole, each of the plurality of pins is detachably disposed through one of the first pivotal hole and one of the second pivotal hole, an exterior circumference of each of the plurality of pins includes a ring member which is radially deformable and blockable by a hole flange of one of the first pivotal hole; each of the plurality of pivoting portions includes two ear portions, the two ear portions define the recess, each of the two ear portions has the first pivotal hole, two opposite sides of one of the two ear portions have two first guide slant annular end faces corresponding to the first pivotal hole, and two opposite sides of one of the plurality of jaws have two second guide slant annular end faces corresponding to the second pivotal hole; each of the plurality of abutted portions protrudes radially beyond a side wall of each of the plurality of jaws; the detachment puller further includes a cylinder holder, the main body further includes a through hole, the cylinder holder is detachably disposed within the through hole, and the cylinder holder includes the threaded hole; the detachment puller further includes a plurality of elastic fixation mechanisms, the cylinder holder includes a plurality of positioning portions, each of the plurality of positioning portions includes a plurality of first abutting faces, the threaded hole has a plurality of second abutting faces which correspond to the plurality of first abutting faces, and each of the plurality of elastic fixation mechanisms abuts against and between one of the plurality of first abutting faces and one of the plurality of second abutting faces.